Regenerating and filtering apparatus for salt solutions in refrigerating or ice-making machines.



No. 664,387. Patented Dec. 25, I900. a. nunsnu-zm.

REGENERATING AND FIL'I'ERING APPARATUS FOR SALT SOLUTIONS INREFRIGERATING 0R ICE MAKING MACHINES.

(Application filed Oct. 13, 1900. I I W (No Model.) 2 Sheets-Sheet l.

WITNESSES: 7%, 8 INVENTQR ATTORNEYS Tn: Noam: PETERS co, PHOTO-LITNI'L.wAsHmnTompv c.

. Patented Dec. 25, I900.

G. DUDERLEIN.

0R ICE MAKING MACHINES.

(Application filed Oct. 13, 1900.)

2 Sheets-Sheet 2.

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jTNESSES:

. UNITED STATES PATENT OFFICE.

GUSTAV DGDERLEIN, OF CARLSRUHE, GERMANY.

REGENERATING AND FILTERING APPARATUS FOR SALT SOLUTIONS IN REFRIGERATlNGOR ICE-MAKING MACHINES.

SPECIFICATION forming part of Letters Patent No. 664.387, dated December9 Application filed October 13, 1900. Serial No. 32,931. (No model.)

To all whom it may concern:

Be it known that I, GUSTAV DoDERLEIN, ingenieur, a subject of the Kingof Bavaria, and a resident of Carlsruhe, in the Grand Duchy of Baden,Germany, have invented new and useful Improvements in Regenerating andFiltering Apparatus for Salt Solutions in Refrigerating or Ice-MakingMachines, of which the following is a clear and 0 completespecification.

The apparatus formingthe subject of this invention has for its object,in refrigerating and ice-making machines for breweries and cold-storageinstallations, both to regenerate 5 to a regular degree of saturationthe salt solution or brine, which becomes weakened by constantly takingup water, and thereby to render it impossible for the coils of i thevaporizer to become frozen by reason of the pres- :o ence of a Weak saltsolution, and also to prevent the'generator and the vaporizing-coilsfrom becoming incrusted with residues from the salt, this being efiectedby filtering the brine before it enters the generator in order :5 toretain all those impurities which are particularly damaging to thepumps.

The apparatus consists of two compartments arranged one under the otherand in communication with one another. Of these ,0 two compartments theone which serves to receive the salt is lined with fabric and is formedof perforated sheet inetal,the said compartment being connected, bothabove and below the salt-container, toa branch from the 5 brine-pump,the said branch being provided with regulating devices. The othercompartment contains a removable filter, and above the said filter isprovided with a pipe in communication with the generator, so thata part.0 0f the brine Which is kept in circulation by like view of the same,taken at right angles to the view represented in Fig. 2 of the drawings.Fig. 4c is a horizontal sectional view of the same.

A, Fig. 1, indicates the generator of a refrigeratingmachine, and B thewooden chamber of the regenerating and filtering apparatus, the saidchamber being lined with sheet metal and being divided into two unequalcompartments b and c by a sheetnnetal partition a, which does not reachto the bottom of the said chamber. In the compartment 1) there isarranged a container (1, of perforated sheet metal, which is lined withan easilypermeable cloth e and is designed to receive the salt. Thiscontainer 01 can be secured in the compartment biu any suitable manner.

0 indicates a pump which serves for the circulation of the brine andfrom which a branch pipe f, having a regulating-cock 1*", passes to thecompartment 1). This branch pipef opens through a spraying device 9 intothe upper part of the salt-container d, the contents of which,therefore, are sprinkled with the brine, and also through a branch pipefunderneath the salt-container d. as and y are cocks which serve forregulating the flow of the brine into the upper and lower part of thecompartment b, and z is a device which enables the vessel B to beemptied when necessary.

At a certain distance from the bottom of the vessel B the filter D isremovably fitted in the compartment 0, and this compartment above thefilterD is placed in communication with the generator A by means of apipe E.

F is an overflow-pipe.

The filter, which is shown in detail in Figs. 2 and 4, consists of asheet-metal case h,adapted to receive the filtering material andprovided with a perforated bottomt', the whole of the periphery of whichis supported upon a frame 7c, formed of an angle-iron and riveted to thewall of the compartment 0, a felt packing 3' being arranged between thesaid bottom and the support. The said support is strengthened by aU'shaped cross-piece Z, riveted to it, and to the latter there issecured a vertical rod or. by means of a nut m, which said rod isprovided at its upper end with a screw-thread o. The rod n passesthrough a tubular socket 19, secured to the perforated bottom t' of thesheet-metal case h. By means of a nut q upon the upper part of the rod ndownward pressure can be exerted upon the socket 9', so that theperiphery of the bottom '5 is pressed tightly against the felt packingj.The filtering medium-such as wood, wool, dad-which is introduced intothe case his retained therein by a perforated cover 7, and upon thelatter there restv two U-sha-ped crosspieces 5, through each of whichthere passes a rod 15, which is screw-threaded at its upper end and issecured to the perforated bottom 2'. By means of sleeves or sockets itupon the upper parts of the rods 25 and of nuts 0 it is possible'toexert a pressure upon the crosspieces 3, and thereby the cover r, sothat the latter retains the filtering medium in the case hand preventsit from being dislodged.

The operation of the apparatus is as follows: The liquid, which isconveyed to the apparatus through the branch pipe "from the pump 0,enters for the greater part through the cock m into the upper part ofthe compartment b and sprinkles the salt contained in thechamber d,whereby a constant solution of the salt is obtained and the brinebrought to the proper degree of saturation. All impurities are retainedby the filter D and collect upon the bottom of the chamber B. They canbe removed by taking out the parts of the apparatus and sprinkling thesheet-metal chamber B with clean water, so that the impurities areeasily conveyed away through the discharge device z.

By adjusting the cock f an overflowing of the apparatus can ordinarilybe avoided. Should, however, the liquid rise above the normal in thecompartment 6, no overflow can take place, by reason of the fact thatthe excessliqnid flows away through the pipe F, under which a suitablereceiving-vessel can be arranged.

The fabric lining of the compartment (1 prevents the passage ofparticles of salt into the under part of the compartment I). Should,

however, such particles succeed in passing through and the brine byreason of its liquid being too highly saturated deposit salt in theunder part of the compartment b by crystallization,the said salt isdissolved by the unsaturatedliquid entering through pipef', so that thisdeposit in no way interferes with the operation of the apparatus.

By loosening the nut'q the filter can be easily removed from thecompartment 0 and the filtering material renewed, this beingeasilyeffected by loosening the nuts '0 and removing the sockets u,cross-pieces s, and the cover 1*.

What I claim is 1.. A regenerating and filtering apparatus for saltsolutions for use in refrigerating and ice-making machines, consistingof two closed compartments in communication with one another, one of thesaid compartments having a salt-container of perforated sheet metallined with a suitable fabric and being in communication both above andbelow the saltcoutainer with a branch from the liquidpump having aregulating device, while the other compartment contains a removablefilter and is, above the said filter, in communication with thegenerator, substantially as, and for the purpose, hereinbeforedescribed.

2. A regeneratin-gand filtering apparatus for salt solutions for usewith refrigerating and ice-making machines, consisting of two closedcompartments'in communication with one another, one of the saidcompartments having a salt-container of perforated sheet metal linedwith a suitable fabric, and being incommunication with a branch from theliquid-pump having a regulating device,while the other compartmentcontains a removable filter which consists of a sheet-metal casecontaining filtering material and having a perforated bottom and aperforated cover adjustable by means of screw devices, the bot tom ofthe said case being pressed against a rigid frame or support having afelt packing by means of a socket upon the cover and a rigid rod,substantially as, and for the purposes, hereinbefore described.

In witness whereof I have hereunto signed my name, this 21st day ofSeptember, 1900, in the presence of two subscribing witnesses.

' GUSTAV DODERLEIN.

Witnesses:

AMAND BITTER, GEO. GIFFORD.

